I use my bitcoin... otherwise what is the point?

It's a currency so I use it to buy goods whenever I can get them for btc. 

I've bought office furniture from Overstock.com, steam games and a win 8.1 pro key here on the forums.

A MMO - The Elder Scrolls Online: Imperial boxed edition.  For this I had to go to gyft and buy a $100 gamestop gift card and make the purchase from gamestop.  It actually was cheaper this way because I had gyft points from buying 2x $50 Rixty cards to buy some credits in the game Rift.